Double-acting piston batch reverse osmosis desalination assembly and method
US-2026055013-A1 · Feb 26, 2026 · US
Energy sources
Energy sources · Cooperative Patent Classification (CPC)
Separating, mixing, shaping, printing, and transporting materials.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | B01D2313/36 |
| Official title | Energy sources |
| Display label | Energy sources |
| Total patents | 49 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly declining.
| Year | Patents |
|---|---|
| 2015 | 3 |
| 2016 | 4 |
| 2017 | 3 |
| 2018 | 4 |
| 2019 | 6 |
| 2020 | 6 |
| 2021 | 8 |
| 2022 | 4 |
| 2023 | 5 |
| 2024 | 4 |
| 2025 | 1 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Double-acting piston batch reverse osmosis desalination assembly and method
US-12404187-B2 · Sep 2, 2025 · US
Membrane filtration cell with electric field and acoustic field
US-2024399312-A1 · Dec 5, 2024 · US
Apparatus and method for tempering soft water and/or permeate for a dialysis system
US-2024366848-A1 · Nov 7, 2024 · US
Clean water production with enhanced electricity
US-11969691-B1 · Apr 30, 2024 · US
Thermally reflective membrane apparatuses, and related fluid treatment systems and methods
US-11925902-B2 · Mar 12, 2024 · US
Distributed energy source system utilizing waste heat deeply
US-11802058-B2 · Oct 31, 2023 · US
Electrochemical desalination system
US-2023264140-A1 · Aug 24, 2023 · US
Fluid power circuit having switch-mode power transformer and methods
US-11731081-B2 · Aug 22, 2023 · US
Electrochemical desalination system
US-11648506-B2 · May 16, 2023 · US
Distributed energy source system utilizing waste heat deeply
US-2023109836-A1 · Apr 13, 2023 · US
Double-acting piston batch reverse osmosis desalination assembly and method
US-2022340453-A1 · Oct 27, 2022 · US
Use of surface modified porous membranes for fluid distillation
US-2022323906-A1 · Oct 13, 2022 · US
Use of surface modified porous membranes for fluid distillation
US-11331627-B2 · May 17, 2022 · US
Systems and methods for separating surface materials from a fluid using acoustic pressure shock waves
US-11254589-B2 · Feb 22, 2022 · US
Model-free controller and method for solar-based distillation system
US-2021394119-A1 · Dec 23, 2021 · US
Method and solar-based system for simultaneous electricity and fresh water generation
US-2021384865-A1 · Dec 9, 2021 · US
Acidic treatment liquid processing apparatus, acidic treatment liquid processing method, surface treatment system, and surface treatment method
US-2021339199-A1 · Nov 4, 2021 · US
Apparatus for membrane distillation using solar absorber and heat pump
US-11052349-B2 · Jul 6, 2021 · US
Use of surface modified porous membranes for fluid distillation
US-2021170337-A1 · Jun 10, 2021 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B01D2313/36?
- CPC B01D2313/36 is the Cooperative Patent Classification code for “Energy sources.”
- How many patents are filed under CPC B01D2313/36 (Energy sources)?
- Our database includes 49 publications tagged with this CPC code.
- Is patent activity under CPC B01D2313/36 growing?
- Publication counts under this code: 4 in 2024 vs 1 in 2025 (latest complete years).